Thinking Machines Lab
Model Designer
$300K–$400K
San Francisco · On-site · Full-time · Posted Sep 30, 2026
- Experience
- Several years in a role focused on how people interact with technology.
- Visa sponsorship
- Visa sponsorship is offered; success is not guaranteed for every candidate or role.
About the job
Shapes AI model behavior and human-AI interactions, working with researchers and cross-functional teams to improve models, interfaces, data, and evaluations.
What you'll do
- Translate design judgment into training data, evaluations, and changes to model behavior; design how models collaborate with people.
- Partner across research, product, design, and engineering to develop interfaces, including live and multimodal interaction.
- Collect high-quality data, define evaluations of human-model outcomes, and identify improvements from user feedback, quantitative insight, and research priorities.
What they ask for
- Clear communication, including explaining complex technical concepts in writing.
- Ability to understand users with needs and contexts different from one’s own, developed through work across varied populations, domains, or cultures.
- Several years of experience in a role focused on how people interact with technology, such as product design, UX research, content or conversation design, or model behavior work at an AI lab.
Nice to have
- Experience designing model behavior or personality, shaping model approaches to research and judgment, or influencing technical roadmaps in judgment-dependent domains.
- Hands-on experience with large language models, including prompting and evaluating outputs; experimentation, quantitative analysis, or a portfolio demonstrating craft and clarity are also welcomed.
Pay
$300,000–$400,000 USD (base salary)
Tools
large language models
AI focus
Shapes model behavior, collaboration, judgment, uncertainty, values, training data, evaluations, and human-AI interfaces, including live and multimodal interaction.
Model-written summary · the original posting is authoritative